Rack 2 Pro crackling?

Check the performance meters anyway. I had Surge XT String Osc recently in a patch and with some modulation it would suddenly spike dramatically and even though I was technically not over CPU for the whole patch, it was causing intermittent crackles. Once replaced with another osc, no crackles. You never know what module might fight back sometimes. The curse of a constantly updating constantly evolving open source software jam like VCV.